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Small transport was allowed to climb through an altitude of an small aircraft. Less than standard separation occurred.
| Attributes | |
| ACN | 105090 |
| Time | |
| Date | 198902 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ste |
| State Reference | WI |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 17 |
| ASRS Report | 105090 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 11800 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
An small transport was cleared from cwa to mke with restrictions. At the time I had an small aircraft at 9000' over flight from rie ste V63 osh V510 mke. Small transport departed cwa. I gave clearance to maintain runway heading until leaving 7000'. He proceeded on course to maintain 11000'. Small transport was requesting 15000'. Small transport was radar contact at 8 mi west of cwa leaving 5800'. Shortly thereafter C/a went off. I entered an interim altitude of 11000' because I thought the potential confliction was between an aircraft at 12000'. I then redirected my attention to the cwa area and realized that the conflict was between small transport and small aircraft at 9000'. At this time I turned small transport to avoid small aircraft. I'd like to see, when C/a goes off and when you enter an interim altitude to stop the airplane data block from flashing, it would stop immediately. As it is now it still keeps flashing several times.
Original NASA ASRS Text
Title: SMT WAS ALLOWED TO CLIMB THROUGH AN ALT OF AN SMA. LESS THAN STANDARD SEPARATION OCCURRED.
Narrative: AN SMT WAS CLRED FROM CWA TO MKE WITH RESTRICTIONS. AT THE TIME I HAD AN SMA AT 9000' OVER FLT FROM RIE STE V63 OSH V510 MKE. SMT DEPARTED CWA. I GAVE CLRNC TO MAINTAIN RWY HDG UNTIL LEAVING 7000'. HE PROCEEDED ON COURSE TO MAINTAIN 11000'. SMT WAS REQUESTING 15000'. SMT WAS RADAR CONTACT AT 8 MI W OF CWA LEAVING 5800'. SHORTLY THEREAFTER C/A WENT OFF. I ENTERED AN INTERIM ALT OF 11000' BECAUSE I THOUGHT THE POTENTIAL CONFLICTION WAS BTWN AN ACFT AT 12000'. I THEN REDIRECTED MY ATTN TO THE CWA AREA AND REALIZED THAT THE CONFLICT WAS BTWN SMT AND SMA AT 9000'. AT THIS TIME I TURNED SMT TO AVOID SMA. I'D LIKE TO SEE, WHEN C/A GOES OFF AND WHEN YOU ENTER AN INTERIM ALT TO STOP THE AIRPLANE DATA BLOCK FROM FLASHING, IT WOULD STOP IMMEDIATELY. AS IT IS NOW IT STILL KEEPS FLASHING SEVERAL TIMES.
Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.